package com.atguigu.gulimall.seckill.schedualed;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * @author 马迎迎
 * @Title: SeckillSkuService
 * @Package com.atguigu.gulimall.seckill.schedualed
 * @Description: TODO(添加描述)
 * @date 2021年06月02日 13:42
 */

/**
 * 秒杀商品的定时上架
 * 每天晚上3点：上架最近三天需要秒杀的商品
 * 当天00:00:00 - 23:59:59
 * 明天00:00:00 - 23:59:59
 * 后天00:00:00 - 23:59:59
 */
@Slf4j
@Service
public class SeckillSkuSchedualed {
    @Autowired
    private SeckillService seckillService;
    @Autowired
    private RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    //TODO 幂等性处理
    @Scheduled(cron = "0 * * * * ?")
    public void updateSeckillSkuLasted3Days() {
        //1.重复上架，无需处理
        System.out.println("上架秒杀的商品信息...");
        //分布式锁。锁的业务执行完成，状态已经更新完成，释放锁以后，其他人获取到就能拿到最新的状态。
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillService.updateSeckillSkuLasted3Days();
        } catch (Exception e) {

        } finally {
            lock.unlock();
        }

    }
}
